Well this is not quite a concept phone, but it is a concept that all of you unconventional energy users will love! It’s basically smaller than an iPod and it’s an accessory used to charge your cellphone on the go, using solar energy. This mini solar charger can be connected to your phone through an adapter and it adds up to 3 extra hours of “juice” to your battery. The Strapya environmentally friendly gadget costs just $17.54, so you’ll be saving the planet at a low price. Keep in mind that this solar charger only has to be exposed to sunlight for 6-10 hours, in order to be able to recharge your phone.